What Plugs?
What Plugs?
03-20-12, 10:48 PM
#2
Keep using them! Buy a plug cleaner at harbor freight and just rotate them. I buy a set or 2 each season and run them until they crack. also try buying from air, he usually prices them well but you are not going to find them much cheaper!
Are you street driving with them? I run 9's on the street, also warm up at the track On them. Then swap in the race plugs and maybe swap in another set depending on how many passes I make.
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03-21-12, 11:49 AM
#10
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^ The Greddy plugs are the R7420 iridiums. Only difference I found was price, the Greddy's were usually cheaper. I'm also going to be trying out the NGK BUE's this summer, they are surface gap like OEM, but as cold a plug as you can get (don't list a number). Only problem with them is they are not as long in the thread area, and are a bit more recessed than stock.
03-23-12, 11:54 AM
#21
Thing is, I drive my car on the streets and sometimes like to get in to 25+ PSI.
Don't want a hot plug in there if I'm going to do that.
Just bought a set of the Greddy's and have a set in there already that I will take out and clean and then swap them back and forth.
Don't want a hot plug in there if I'm going to do that.
Just bought a set of the Greddy's and have a set in there already that I will take out and clean and then swap them back and forth.
03-23-12, 12:31 PM
#22
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You can even see on the side of the Greddy plug it says NGK Iridium.
03-23-12, 07:41 PM
#23
The Greddy plugs are definitely not Denso, they're NGK, and you aren't going to find them (the R7420's) for any cheaper than the Greddy's. When I got mine I got them through RHDjapan: http://www.rhdjapan.com/trust-greddy...tary-13b-13926 for $35/plug.
You can even see on the side of the Greddy plug it says NGK Iridium.
You can even see on the side of the Greddy plug it says NGK Iridium.
03-24-12, 12:39 AM
#24
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The densos look almost identical to the NGK R7420's though, so maybe they are all the same plug? The Denso's are listed for more than the NGK's, check here: http://www.ngk.com/results_cross.asp?pid=7756&x=0&y=0
